Engine-lubrication system



A. LLEo ET Al.

ENGINE LUBHICATIN SYSTEI June 23, 1925.

Original Filed Jan. 5. 1920 least" possible power consumption .for this To all whom It may cof/wem:

type in whiclithe-.parts are forthe most" rotar Patented June y23g` 1925.

uNlIsD STATES PATENT o1=1`=i1c1:.Qv`

" ALBERTO LLo AND CLAUDIO BARDAT, r, BARcELoNA, sIAIN; aan) DnDA'r' AssIGNoIt 'ro SAID LLEo.-

ENGINE-LUBRICATIQN sYs'rE/M.c 1

Original application led January 5, 1620', Serial No. 349,852. Patent No. 1,479,918, dated/January-S,

1924.' Divided and this apmcation ined January 15, 1921. serial No. 437,484.

Be it known that we, ALBERTO and CLAUDIO BARADAT, subjects of the King' of Spain, v.and residents of Barcelona, Spain,

have invented. certain new and usefullmprovements in Engine-Lubrication Systems,

of`which the following isa specification The invention relates to,ce1 tain improvements in four cycle. internal combustion' en\- gines of the multi-cylinder, balance-piston part disposed symmetrically on opposite sides of a transverse" medial plane and in which vthe Sets of pistons on leach side are connected througha" wabble-plate mecha' nism toI translate the reciprbcatory movement ofthe pistons of` the adjacent set into y movement of a centrally disposed driven shaft. f 1

` The present disclosure constitutes a 'dei velopment of the subject-matter contained i`n our -,copending ap lication'sA for internal combustion engines, erialfNo. 135,7 98, filed December'th, 1916, Patent No. 1,355,484,

and Serial No. 219,634, filed February 28th,

1918, Patent No. 1,355,485.; and constitutes i a 'division' of `our copending application `Serial No. 349,652, filed `January 5th, '1920,

Patent N o. `1,479,918,`on, almulticylinder A general objectfof theninvention in so 'fair as this divisional application is conn. cernedis to provide in an-engineof'the type outlined a simple organiza-tion ofparts 1n whichL ther mvable'elements.. will. be ellif l ciently lubricated.

I'. Another Aobject of the invention andstill featuring simplicity of parts is to provide y for lubricating the movable parts effectively and' continuously with theutilization of the purpose and the adaption; as far as'possible,

of parts structurally necessary in the engine for /the 4additional function of providing parts ofthe lubricating system. l

, l Broadly, this latter object is attained 'by -allyof the driven shaft through one construction. A Varlous other ob]ects must necessarily Ibe V'made of relatively, solid and advantages of the invention will be in -pat obvious fromm I tion, and the invention alsoconsists in cer-l tain new and novel'features of construction and. combination Y cfa parts hereinafter -set forth and claimed. y

.Referring to the accompanying drawings (The ligure is a sectionalview taken f axical embodiment of the invention.

application to similar partSrasM-the art will permit.

And it --`will bevunderstoodl that parts 1referred to in the speciicatipn are in. general duplicated at`4 opposite ends of the engine' structure.

shown a centrally disposed casting 11, intermediate spacing shells 12 at each longitudinal end @fthe casting and' heads' 13 inthe form off hollow shells "defining the round 'fends' of the casting. A ormed, inelfect, of three long, circular walls disposed cncentrically The .casting is about the axis fa-b and including anvinner wall 14, anV intermediate wall 15,' andan .outer1 wall 16. The space between the intermediate wall and the outer Wall -is divided longitudinal] physiln-thevfollowing C'description and in the claims, parts will identified by `specific ynames for convenience' of expression' butl they are intended tobe as genericin their ofthe axis --b to, -form a plurality of ongitudinally extend? csf Inj'the accompanying drawings, there ing explosive ychambers 17 disposed inja circle about the axis a--b and each having a relatively small cross-sectional area perpendicular tO the axis. The space between the intermediate wall 15 and the inner Wall 14 is divided by means of'a radial partitiori'j l 18 to form two annular gas conducting passageways 19 and 20. `The passageway 19 35 thereto.

ried inthe outer end of a centrallydisposedI `shell 65.

'As is usual with such engines the axially disposed shaft 26 is formed symmetrically wit l ya straight centralv portion. 63, aligned end portions 67"and 68'concentric with reference tot the .axis w-b and with two inclined portions C69 and l70 extending at the same angle andv in opposite directions to each other Lacross the axisa-b andconnectiiig' re'- spectively thel ends .of the` straight portion 63 with en portions 67 and 68 as is' usual `in such ty es ofwabbling plate transmisf sion devices. The.l shaft parts are connected by means of a pair of coating face plates one ofl which is Athe face plate 71 formed integrally with and disposed at an angle to the respective inclined ortions169 or' 70; of

l the `shaft. .The other ace lfate 72 consti plug 81 one end of the-tube is connected with the drilling 86. The outer end of each tube is connected with asupply intake passageway 89 drilled in the otherwise solid shaft end and in. the'plug 80. This passageway 89 is designed to receive lubricant from a source of supply such as the oil pump 91.

.The tube 87 is provided with outlet vents 93 to permit the passage .of the lubricant into' the hollow portion of the crankfpin. The crank pin is provided with outlet ports` 94 for supplying the bearings 95 and 96 of the wabble plate construction..

The central portion 63 of the shaft is provided adjacent opposite ends with inset 8o .plugs 99 which constitute supports for oppov i site ends of an oil 'conducting tube 100V axially disposed in the central portion of 1 the shaft and'extendin substantially for its entirelengthg' rThis tu e is of advanta e in tending to reducethe amountof .lubrlc'ant necessary when shafts having large xtubular -cayacity'are utilized. f f' he shank/vv portions at opposite' ends of the inclined crank-pins are enlarged to ex-l tendfoutwardl lbeyond the outlines of the .periphery of t e pinto' form abutments 101 atV oppositeends thereof..- A hollow," rela: ftively li ht. wabble plateconstruction of readlly emountable and .intertting parts is fitted between the abutments. 101 so as to tutes a flange from one en of a Sleeve 73. beheld against end play. This' construction includes two fnusto-conicalshells'102 and j 'which is slid fon the 'adjacent end ,of the straight portion 63 of the shaft and is held y The' parts forming the'shaft are m e hollow to accommodate the lubricating. ature ofthe invetioniand are made massive withrelatively thick walls so as to transmit the heavy strains imposed thereon .and atthe Sametime maintain their `true symmetrical osition with referenceto the axis'ab un er prolonged and severe work- 4in lconditions. rlhe central portion 63 is' rovided at opposite ends with closlng plugs .45 8 and'thus forms-aclosed lubricating reser'. vo1r/79 within the'lengthl ofthis 'straightportion in the ,embodimei1t of .disclosed in the figure.

the invention The inclined portions or crank of the ki0` shaft are likewlseformedof a hollow tubu v lar/structure and are closed at opposite ends bymeansof'plugs80 and '81, thus providing oil reservoirs `82 in each .of 'the inclined v'crank pin portimons of the shaft. ,Commu- A nicationis provided between the-lubricating reservoir and `the"reservfoins 82.y at opposite ends-thereof by means of drillings, one ofI which. 86 extends angularly from the reservoir 79, through the side of the` shaft 63, through `the sleeve 73, and .face plate"71.

-A lubricant conducting tube 87 lis positioned axially in the respective shaft portion 69 or 70, and has its opposite ends inserted inthe closing plugs and- 81^at opposite ends 65 ther-'cof and by means of a drilling 88 in the 103 with .their small ends projecting outwardly from each otherl and formed into -relatively long -hubs 104 engagingl the abutments ,and with their hollow sides 4facing Aeach other and spaced apart. The bearings and 96 are formed between the hubs and the ,portions of the.l pin encircled thereby. By this constructipn' 1t is possible to mount the wabble plate shells only at the ends of `free of frictional resistance'and permitting thev mountingof: an end Athrust bearing 105 inl the lubricant containing Aspace'106. The lubricant containing space enclosed by the shells is encircled by a relatively thick thrust ,.Ithe crank pin, leaving the intermediate part ion i lshells. 102 and-103. The spaceenclosed by the shells 102, 103 and the wall I108 forms the lubricant containing reservoir 106 which is' fed 'from -the ports 94 leading from the in'- terior of the pin and the piston rod bearings. It will be noted that the end thrust beariglO is positioned within the lubricant containingy reservoirand this construction is ofwmaterial importancefwhen. it is 'considered that the "thrust of the pistons on the shaft.A is usually transmitted through the .wabble plate with a decided tendency to distort the plate an'd'thus destroy the effective@ ness ofthe pre-designed organization. The ring 107 exteriorly of the wall 108 is formed of. outwardly extending shell walls 118, which are inclined towards each other and at the jointure of the walls is provided with a circle of spherical sockets 119 one for receiving each of the spherical heads 120 of the longitudinally` disposed piston rods 121. Lubricantconducting tubes 122 extend from the wall 108 through the hollow space between the shell walls 118 and open into the sockets 119 to supply lubricant from the reservoir 106 to the several .piston end sockets. The pistons 124 are of the conventional trunk type, are reciprocatorily mounted in the piston cylinders 45 and are demountably connected by means of the4 spherical sockets 125 with the inner ends of the piston rods 121 as is usual in such constructions. It will be appreciated that the lubricant leaking from the exposed front end of the sockets 119 will be splashed by the rocking wabble plate into the open ends of the piston cylinders to lubricate the same as well as the sockets at the piston ends of the piston rods. The wabble plate will also act to splash this leaking lubricant into the adjacent shaft bearings.

There is provided an attachment which includes the lubricant supplying pump 91 which discharges through the tubes 144 into the drilled conduits in the ends of the shaft. The pump is supplied from the bottom of the end shells through a return pipe 145.

In providing for the lubricatmg system every effort has been made to reduce the amount of lubricant carried and parts which were found necessary in addition to the power transmission parts have been made as light as possible. In general the invention features a refinement in structural organization of an engine of the type disclosed rather than in any improvement in functional operation.

While we have shown and described, and have pointed out in the annexed claims, certain novel features of our invention, it will be understood that various substitutions and changes in the form and details of the device illustrated and in its operation may be made by those skilled in the art without departing from the spirit of the invention.

Having thus described my invention, I claim f 1. In an internal combustion engine of the wabble plate type, a driven shaft including a central straight portion, angularly disposed portions atopposite ends thereof and straight, end portions aligned with the central portion, said central and' inclinedportions being hollow separate means for closing the ends of the same to form oil compartments therein, intercommunicating means providing for fluid communication between the compartments so that the lubricant will flow from one into another and means for feeding the lubricant through one of the end portions to supply the oil compartment inthe adjacent inclined portion of the shaft, wabble plate mountings on said. inclined portions of the shaft, said portions provided with vents for supplymg vthe mountings thereon with lubricant from the interior thereof.

2. In an internal combustion engine, `of the wabble plate type, a driven shaft including a tubular center portion, plugs closing opposite ends of the same to form an oil compartment, an inclined tubular shaft portion rigidly secured to an end of the center portion, plugs for closing opposite ends of said inclined portion to form another oil compartment and means for placing one of the compartments in fluid communication with the other compartment.

3. In an internal combustion engine of the wabble plate type, a driven shaft including tubular center portion, plugs closing opposite ends of the same to form an oil compartment, an inclined tubular shaft portion, a shank connecting one end of the center portion with the adjacent end of the inclined portion, a plug closing the end of the inclined portion adjacent the shank, said shank and plug-provided with oil passageways coacting to provide fluid communication between the oil compartment in the center portion and the inclined tubular shaft portion.

4. In an .internal combustion engineof the wabble plate type, a driven shaft including a tubular center portion, plugs closing opposite ends ofthe same to form an oil compartment, an inclined tubular shaft portion, a shank connecting one end of the center portion with the adjacent end of the inclined portion, a plug closing the end of the inclined portion adjacent the shank, said shank and plug provided with oil passageways coacting to provide fluid communication between the oil compartment lin the center portion and the inclined tubular shaft portion, and a distributing tube leading from said last named plug into the interior of the inclined shaft portion and adapted to-supply a lubricant to said interior.

5. In an internal combustion engine of the wabble plate type, a driven shaft including acentral straight portion, angularly disposed portions at opposite ends thereof vand straight end portions aligned with the central portion, said shaft provided within its outlines with a lubricant-conducting passageway for receiving the lubricant in one of the end portions and for conducting the same through the adjacent inclined shaft portion through the central portion and into the other inclined shaft portion and said shaft provided with openings providing 'disrect access to all parts of the passageway and means for closing said openings.

6. In an internal combustion engine of the wabble plate type, the combination of an axially disposed shaft portion'and inclined crank pin shaft portions secured at opposite ends to the axially disposed shaft p ortion, said angularly inclined portions bemg tubular and opened at opposite ends and removable plugs for closing said ends, one of said plugs provided with an oil conduit for admitting oil to the interior of the respective inclined shaft portion.

7. ln an internal combustion engine of the class described, the combination of an axially disposed shaft opened at opposite ends, readily removable means for closing said ends, an oil passageway'leading from the interior of said shaft adjacent each of the opposite ends thereof, a pair of tube-'supporting-plugs positioned within said shaft and spaced inwardly from the oil passageways at opposite ends, and an oil conducting tube supported at opposite ends by said pair of plugs whereby a lubricant may be introduced through one of said passageways at one end of the shaft and caused to flow into the bore of the shaft, through said tube 'into the bore at the opposite end and to be discharged through the passageway at said opposite end.

8. ln an internal combustion engine of the class described', the combination of an axially disposed shaft portion .opened-at opposite ends, readily removable means for closing said ends, an oil passageway leading from the interior of said shaft adjacent each of the opposite ends thereof, a pair of tubesupporting-plugs positioned within said shaft portion andspaced inwardly from the oil passageways at opposite ends, and an oil conductingrtube supported at opposite ends by said pair of plugs whereby a lubricant may be introduced through one of said passageways at one end of the shaft portion and caused to flow into the bore thereof, through said tube into the bore at the opposite end and to be discharged through the passageway at said opposite end, an inclined shaft portion fixed to one end of the first named portion and opened at opposite ends, means or closing said opposite ends, the means adjacent the first named shaft portion provided with a lubricating passageway designed to be opened to the passageway leading from the first named shaft at the adjacent end whereby the lubricant is passed from the first named shaft portion into the angularly disposed shaft portion.

9. In an internal combustion engine of the wabble plate type, the combination of a shafting including a centrally disposed shaft portion and angularly disposed crank pin portions at opposite ends of the central shaft portion, a wabble plate construction mounted upon each of said inclined crank portions, a plurality of explosive chambers the shafting for encircling the centrally disposed shaft portion, balanced pistons facing the opposite ends of said chambers and with a piston of each cylinder facing one of said wabble plate constructions and the other piston of said cylinder facing the other wabble plate construction, a single lubricant supplying means for supplying a lubricant through both of the wabble plate constructions to the several pistons and their containing c vlinders and a single pressure means acting on the lubricating supplying means within forcing the lubricant lthrough both the wabble plate constructions.

10. In an internal combustion engine of the wabble plate type, the combination of a centrally disposed shaft portion. a plurality of piston cylinders encircling said shaft portion, extending parallel thereto and all opening in one direction at one end` an angularly disposed shaft portion fixed to the first named shaft portion and facing the exposed ends of the cylinders, a wabble plate construction carr1ed by said angularly disposed shaft portion, a piston in cach cylinder operatively connected to the wabble plate construction for translating the reciprocatory movement of the pistons into rotary movement of the shaft, means for supplyingV lubricant to said wabble plate construction. said construction acting on the lubricant supplied thereto for splashing the same into the exposed ends of said cylinders, a head shell defining one end of the engine and enclosing said wabble plate construction, said shell having internal dimensions closely adhering to the space outlined by the wabble plate construction in its cycle of movement and means at the bottom of the head shell for receiving the drip from thefpiston cylinders.

11. In an internal combustion engine of the wabble plate type, the combination of a centrally disposed shaft portion, a plurality of piston cylinders encircling said shaft portion, extending parallel thereto and all opening in one direction at one end, an angularly disposed shaft portion fixed to the first named shaft portion and facing the exposed ends of the cylinders, a wabble plate construction carried by said angularly disposed shaft portion, a piston in each cylinder operatively connected to the wabble plate construction for translating the reciprocatory movement of the pistons into rotary movement of the shaft, means for supplying lubricant to said wabble plate construction, said construction acting on the lubricant supplied thereto for splashing the same into the exposed cylinders, a head shell Vdefining one end of the engine and having an internal dimension closely adhering to the space covered by the wabble plate construction said end shell in its cycle of movement and constituting a means for renoV 'Caving Vthe inhumationl ripped from 'die cylinders andto form a ool of lubricantin the bottom of said hea shell, said -Wah'- ble plate construction acting to splash lubricant from thezsaid pool onto the adjacent parts. l i y' 12. In an internal' combustion engine of ythe wabble plate. type, the combination of a centrally dispose shaft portion, a plurality of piston cylinders enclrcling said shaft portion, extending parallel thereto and all `opening, in one direction`at one end, an

the reciprocatory movement of the pistons into, rotary movement of theshaft,

' for 'enclosing said cylinders,V and ble fac plate constructions, said means including an end shell facing the exposed ends of the cylinders and containing said wabble late construction,means for supplying lubrlcant4J to said wabble plate construction, said construction acting on thel lubricant supplied thereto forA splashin the same into the ex posed cylinders, an a pipe connectionleading from .the bottom oef-,said shell to Withdraw lubricant .from said pool.

13. In a device of the class described, the combination of a hollow crank pin inclined to its axis of rotation, a hollow wabble plate construction "loosely mounted on said pin and having walls providing 'a space for containing lubricant, said pin provided with ports for supplying the interior ofl `the wabble plate construction with lubricant from the interior of the pin, anend thrust -bearing between the central portion of the pin and a portion of said walls, said bearing d disposed within the lubricant containing space within the wabble plate construction.-

14. In a device of the class described, the combination of a hollow crank pin inclined to its axis'of rotation, a hollow wabble plate construction loosely mounted on said pin and having walls providinga space for containing lubricant, said pin provided with ports for supplying the- Yinterior 'of the wabble platelv construction -with lubricant from the interior of the pin, an end thrustV bearing between the central yportion of the pinjand a portion of` said walls, said bearing disposed within the lubricant containing space within the wabble plate construction, said construction being relatively thick along the, length of the pin and formedhollow to. feature alight construction, said construction provided with exposed bearings Xfor piston rodsand provided with lubricant conduits extending across thejhollow interior thereof for supplying said bearings from the interior of the pin.

This specification signed this 7th day of October, 1920.

v ALBERTO LLEO'.

LAUDIO BARADAT. 

